The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2021
Filed:
Aug. 11, 2020
Ememory Technology Inc., Hsin-Chu, TW;
I-Lang Lin, Hsinchu County, TW;
eMemory Technology Inc., Hsin-Chu, TW;
Abstract
A method for operating a plurality of memory cells includes performing a read operation to each of the plurality of memory cells. If at least one memory cell of the plurality of memory cells is determined to be in a programmed state, perform an erasing test operation to the at least one memory cell with an initial erase voltage being applied to the erase line, and perform a verification operation to the at least one memory cell. If the cell current is smaller than the reference current, generate an intermediate erase voltage by adding a step voltage to an erase voltage currently used, and perform the erasing test operation to the at least one memory cell with the intermediate erase voltage being applied to the erase line. Performing the verification operation to the at least one memory cell again.